Display device having light transmissive regions

ABSTRACT

An exemplary embodiment of the present invention provides a display device including a first display area having a plurality of first pixel regions and a second display area having both a plurality of second pixel regions and a plurality of light transmissive regions. The second display area includes a plurality of scan lines. The second pixel region includes a plurality of pixel electrodes and a voltage line disposed on a same layer as the pixel electrodes. The voltage line overlaps the scan line to be parallel therewith in the light transmissive region.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to and the benefits of Korean PatentApplication No. 10-2019-0003450 filed in the Korean IntellectualProperty Office on Jan. 10, 2019, the entire contents of which areherein incorporated by reference.

TECHNICAL FIELD

The present disclosure relates to a display device and, moreparticularly, to a display device having light transmissive regions.

DISCUSSION OF THE RELATED ART

A display device such as a liquid crystal display (LCD) or an organiclight emitting diode (OLED) display includes a display panel having aplurality of pixels capable of displaying an image. Each pixel thereofmay include a pixel electrode for receiving a data signal. The pixelelectrode may be connected to at least one transistor to receive thedata signal.

The display device can display an image by the sending of the datasignals to the pixel electrodes. Display devices may have variousfunctions in addition to the ability to display an image.

For example, a display device may include an optical device disposedwithin a bezel (or a border portion) of a front surface of the displaydevice (e.g., one surface on which an image is displayed), and thedisplay device may be able to recognize an object using the opticaldevice. For example, when the optical device is an infrared sensor, thedisplay device may transfer infrared light using an infrared sensor,receive light reflected by the object, and calculate a distance betweenthe display device and the object based on the intensity of thereflected light, and might not display an image if the distance iswithin a specific distance, for example, so as to deactivate the displayof an image when it is detected that a user has placed the displaydevice in close proximity to the user's face, for example, when a callis being taken or made on a smartphone that incorporates such a displaytherein.

As the bezel of the display device becomes thinner, there might not beadequate bezel space for the disposition of an optical device. In recentyears, display devices have been made not to have any bezel at all.Thus, the optical device (such as an infrared sensor) may be disposedelsewhere and an image is displayed on the entire front surface of thedisplay device.

SUMMARY

Exemplary embodiments of the present disclosure provide a display devicehaving functions in addition to image display. These functions may beperformed by one or more optical devices which may be disposed behind aportion of the display device that is still capable of displaying animage. Light transmittance of a display area corresponding to an opticaldevice may be enhanced and display quality of a displayed image may bemaintained.

An exemplary embodiment of the present invention provides a displaydevice including a first display area and a second display area. Thefirst display area includes a plurality of first pixel regions and thesecond display area includes both a plurality of second pixel regionsand a plurality of light transmissive regions. The second display areaincludes a plurality of scan lines. The second pixel region includes aplurality of pixel electrodes and a voltage line disposed on a samelayer as the pixel electrodes. The voltage line at least partiallyoverlaps the scan line so as to be parallel in the light transmissiveregion.

Pixel electrodes may be omitted from the light transmissive region.

The second display area may further include a control line, and portionsof the scan lines and the control line may be omitted from or otherwiseremoved in the light transmission region.

The scan lines may include a first scan line and a second scan line, anda portion of the first scan line may be connected to a second scan lineof an adjacent pixel column.

A portion of the control line may be connected to a control line of anadjacent pixel column.

The second display area may include a plurality of data lines anddriving voltage lines, and the driving voltage lines may be partiallyomitted from the light transmissive region.

The data lines may be partially omitted in the light transmissiveregion.

The display device further includes a driver, and the first display areamay be disposed between the driver and the second display area.

The second display area may include a plurality of wires, the wires mayinclude a plurality of scan lines and control lines extending in a firstdirection and a plurality of data lines and driving voltage linesextending in a second direction, and portions of the wires may be bentto be closer to each other in the light transmissive region.

An interval between some wires in the light transmissive region may besmaller than an interval between wires in the second pixel region.

A portion of the light transmissive region where no wires are disposedmay have an opening that is formed by partially removing inorganiclayers and organic layers.

An exemplary embodiment of the present invention provides a displaydevice including a first display area and a second display area. Thefirst display area includes a plurality of first pixel regions and thesecond display area includes both a plurality of second pixel regionsand a plurality of light transmissive regions. The second display areaincludes a plurality of wires. The wires include a plurality of scanlines and control lines extending in a first direction and a pluralityof data lines and driving voltage line extending in a second direction,and at least one of the wires is omitted from the light transmissiveregion.

Portions of the wires may be bent to be close to each other in the lighttransmissive region.

An interval between some wires in the light transmissive region may besmaller than an interval between wires in the second pixel region.

A portion of the light transmissive region where no wires are disposedmay have an opening that is formed by partially removing inorganiclayers and organic layers.

The second pixel region may include a plurality of pixel electrodes, thesecond pixel region might not include a voltage line disposed on a samelayer as the pixel electrodes, and none of the pixel electrodes mightoverlap the light transmissive region.

The display device may further include a driver, and the first displayarea might not be disposed between the driver and the second displayarea.

An exemplary embodiment of the present invention provides a displaydevice including a first display area and a second display area. Thefirst display area includes a plurality of first pixel regions. Thesecond display area includes both a plurality of second pixel regionsand a plurality of light transmissive regions. The second display areaincludes a plurality of wires. The wires include a plurality of scanlines and control lines extending in a first direction and a pluralityof data lines and driving voltage line extending in a second direction.Portions of the wires are bent in the light transmissive region, and aninterval between some wires in the light transmissive region is smallerthan an interval between wires in the second pixel region.

A portion of the light transmissive region where no wires are disposedmay have an opening that is formed by partially removing inorganiclayers and organic layers.

The second pixel region may include a plurality of pixel electrodes, thesecond pixel region might not include a voltage line disposed on a samelayer as the pixel electrodes, and the pixel electrodes might notoverlap the light transmissive region.

No pixel electrode might be disposed in the light transmissive region.

An exemplary embodiment of the present invention provides a displaydevice including a first display area and a second display area. Thefirst display area includes a plurality of first pixel regions. Thesecond display area includes both a plurality of second pixel regionsand a plurality of light transmissive regions. No pixel electrode isdisposed in the light transmissive region. The second pixel regionincludes a plurality of transistors and a plurality of pixel electrodes.The transistors include a switching transistor, a driving transistor,and a third transistor including a first electrode connected to anoutput electrode of the driving transistor and a second electrodeconnected to a gate electrode of the driving transistor. Each of thepixel electrodes at least partially overlaps the light transmissiveregion.

None of the pixel electrodes might overlap the light transmissiveregion.

The display device might not include a voltage line disposed on a samelayer as the pixel electrodes.

The pixels may include a first pixel electrode, a second pixelelectrode, and a third pixel electrode. The second pixel region mayinclude a first scan line, a second scan line, and a control line whichare disposed side by side in a first direction. The first pixelelectrode and the third pixel electrode may have a planar shape having awidest width in the first direction between the first scan line and thecontrol line. The second pixel electrode may have a planar shape havinga widest width in the first direction in a region overlapping the secondscan line.

According to exemplary embodiments of the present disclosure, it ispossible to provide a display device having functions in addition toimage display, and which is capable of enhancing light transmittance ofa display area corresponding to an optical device and increasing displayquality of a displayed image.

BRIEF DESCRIPTION OF THE DRAWINGS

A more complete appreciation of the present disclosure and many of theattendant aspects thereof will be readily obtained as the same becomesbetter understood by reference to the following detailed descriptionwhen considered in connection with the accompanying drawings, wherein:

FIG. 1, FIG. 2, and FIG. 3 are schematic layout views illustrating adisplay area of a display device according to an exemplary embodiment ofthe present disclosure;

FIG. 4 is a cross-sectional view illustrating a display device accordingto an exemplary embodiment of the present disclosure;

FIG. 5 to FIG. 12 are layout views illustrating a first display area anda second display area of a display device according to an exemplaryembodiment of the present disclosure;

FIG. 13 is a layout view illustrating a display area of a display deviceaccording to an exemplary embodiment of the present disclosure;

FIG. 14 is a cross-sectional view illustrating the display device takenalong a line XIV-XIV′ of FIG. 13;

FIG. 15 is a schematic view illustrating a pixel region and a lighttransmissive region of a second display area;

FIG. 16 is a schematic view illustrating a second display area of adisplay device according to an exemplary embodiment of the presentinvention;

FIG. 17 is a schematic view illustrating an exemplary embodiment inwhich a control line is omitted;

FIG. 18 is a schematic view illustrating an exemplary embodiment inwhich a first scan line is omitted;

FIG. 19 is a schematic view illustrating a second display area of adisplay device according to an exemplary embodiment of the presentdisclosure;

FIG. 20, FIG. 21, and FIG. 22 are schematic views illustrating a displaydevice according to an exemplary embodiment of the present disclosure;

FIG. 23 is a schematic view illustrating a driver and a second displayarea in the display device according to the exemplary embodiment ofFIGS. 19 to 22;

FIG. 24 is a schematic view illustrating a display device according toan exemplary embodiment of the present invention;

FIG. 25 is a schematic view illustrating a cross-sectional view takenalong a line XX-XX′ of FIG. 24;

FIG. 26 is a cross-sectional view corresponding to that of FIG. 25according to an exemplary embodiment of the present invention;

FIG. 27 is a schematic view illustrating a second display area of adisplay device according to an exemplary embodiment of the presentdisclosure;

FIG. 28 is a schematic view illustrating a second display area of adisplay device according to an exemplary embodiment of the presentdisclosure; and

FIG. 29 is a schematic view illustrating a pixel region of FIG. 28 inmore detail.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present invention will be described more fully hereinafter withreference to the accompanying drawings, in which exemplary embodimentsof the invention are shown. As those skilled in the art would realize,the described embodiments may be modified in various different ways, allwithout departing from the spirit or scope of the present invention.

To more clearly describe and illustrate the present invention, someelements of the present invention have been omitted. Like numerals mayrefer to like or similar constituent elements throughout thespecification and figures.

In the drawings, the thicknesses of layers, films, panels, regions,etc., may be exaggerated for clarity.

It will be understood that when an element such as a layer, film,region, or substrate is referred to as being “on” another element, itcan be directly on the other element or intervening elements may also bepresent. Further, the word “over” or “on” means positioning on or belowthe object portion, and does not necessarily mean positioning on theupper side of the object portion based on a gravity direction.

In addition, unless explicitly described to the contrary, the word“comprise” and variations such as “comprises” or “comprising” will beunderstood to imply the inclusion of stated elements but not theexclusion of any other elements.

Further, in the specification, the phrase “in a plan view” means when anobject portion is viewed from above, and the phrase “in across-sectional view” means when a cross-section taken by verticallycutting an object portion is viewed from the side.

A structure of a display device according to an exemplary embodimentwill now be described with reference to FIG. 1 to FIG. 4.

FIG. 1, FIG. 2, and FIG. 3 each represent a schematic layout view of adisplay area of a display device according to an exemplary embodiment ofthe present disclosure. FIG. 4 is a cross-sectional view of a displaydevice according to an exemplary embodiment of the present disclosure.

Referring to FIG. 1 to FIG. 4, a display area, which is an area on whichan image can be displayed, of a display device 1000, 1000 a, 1000 b, or1000 c, may include a first display area DA1 and a second display areaDA2. The first display area DA1 might only display an image while thesecond display area DA2 might display an image and may also performother functions.

More light may be received by or emitted from the second display areaDA2 than the first display area DA1.

For example, referring to FIG. 4, the display device, according to anexemplary embodiment of the present disclosure, may include a displaypanel 30 and an optical device 500 disposed behind the display panel 30,and light having a wavelength used by the optical device 500 may passthrough the second display area DA2 at a higher light transmittance thanin the first display area DA1.

A ratio of an area occupied by a region on which an image can bedisplayed, i.e., a pixel region, in the second display area DA2 may besmaller than a ratio of an area occupied by a pixel region in the firstdisplay area DA1.

The second display area DA2 includes a pixel region and a lighttransmissive region, and the light transmissive region has higher lighttransmittance than the pixel region. No pixels capable of displaying animage are disposed in the light transmissive region. Herein, the pixelmay be a unit area where light of an image for an input image signal isemitted.

Referring to FIG. 1, the second display area DA2 may be at leastpartially surrounded by the first display area DA1, and the seconddisplay area DA2 may be disposed proximity to one side of the displaydevice 1000 a in a plan view. For example, the first display area DA1may be disposed between the second display area DA2 and an edge of thedisplay device 1000 a in a plan view. For example, the second displayarea DA2 may be disposed around an upper end of the display device 1000a, and may have a planar shape extending primarily in a first directionDR1 along most of an upper edge of the display device 1000 a. As usedherein, the phrase “extending primarily” means that the element beingso-described is longer in the direction so-mentioned than in all otherdirections. Thus an element that extends primarily in a given directionis longer in that given direction than in all other directions.

Referring to FIG. 2, the second display area. DA2, according toexemplary embodiment of the present disclosure, is substantially thesame as what is shown in FIG. 1, but the first display area DA1 mightnot be disposed around at least a side of the second display area DA2.For example, one edge of the second display area DA2 may coincide withone edge of the display device 1000 b in a plan view. For example, whenthe second display area DA2 is disposed around the upper edge of thedisplay device 1000 b, the first display area DA1 might not be disposedabove the second display area DA2.

Referring to FIG. 3, the second display area DA2, according to anexemplary embodiment of the present disclosure, is substantially thesame as what is illustrated in FIG. 2, but the second display area DA2may be disposed adjacent to or near a corner edge of the display device1000 c. For example, one edge of the second display area DA2 maycoincide with one corner edge of the display device 1000 c in a planview. For example, when the second display area DA2 is disposed aroundan upper corner of the display device 1000 c, one edge of the seconddisplay area DA2 may coincide with an edge of an upper corner of thefirst display area DA1.

In addition, the second display area DA2 may be disposed at variouslocations in the display area of the display device, and may havevarious planar shapes. Although not illustrated, the second display areaDA2 may have a circular planar shape around an upper edge of the displaydevice.

Referring to FIG. 4, the display panel 30 included in the display device1000 may include a substrate 10 disposed in the first display area DA1and the second display area DA2 described above. For example, thesubstrate 10 is continuously formed even in the second display area DA2,and there might be no disruption in the continuity of the substrate 10.

A plurality of pixels PX may be formed between the substrate 10 and anencapsulation substrate 20. A sealant 310 positioned between thesubstrate 10 and the encapsulation substrate 20 may further be disposedalong an edge of the display panel 30 so as to seal the substrate 10 tothe encapsulation substrate 20 and define a sealed cavity therebetween.The optical device 500 may be disposed below the display panel 30. Theoptical device 500 may be a camera, a camera flash/flashlight, a sensor,or the like.

The optical device 500 may emit light of a predetermined wavelengthrange toward an object 600 disposed on the display panel 30, or mayreceive light reflected from the object 600. The light having thepredetermined wavelength may be light having a wavelength that can beprocessed (e.g. generated and/or sensed) by the optical device 500, andmay be light having a wavelength other than the visible light region(e.g. it may be infrared light), which is light of an image displayed bythe pixels PX. Light of a specific wavelength may mainly pass throughthe light transmissive region disposed in the second area display areaDA2. When the optical device 500 is an infrared camera, the light of acertain wavelength may have approximately 900 nm-1000 nm or an infraredwavelength band.

The optical device 500 may be disposed corresponding to the entiresecond display area DA2 in a plan view, or may be arranged correspondingto only a part of the second display area DA2. For example, the opticaldevice 500 may be disposed corresponding to a part of the second displayarea DA2 illustrated in FIG. 1.

Hereinafter, the first display area DA1 and the second display area DA2according to an exemplary embodiment of the present disclosure will bedescribed with reference to FIG. 5 to FIG. 12 as well as theaforementioned drawings.

FIG. 5 to FIG. 12 each illustrates a layout view of the first displayarea DA1 and the second display area DA2 of a display device accordingto an exemplary embodiment of the present disclosure.

The first display area DA1 may include a plurality of pixel regions PU1,and the second display area DA2 may include a plurality of pixel regionsPU2 and light transmissive regions TA.

While this figure shows that the pixel regions PU1 of the first displayarea DA1 do not adjoin the pixel regions PU2 and transmission regions TAof the second display area DA2, this need not be the case andalternatively, the pixel regions PU1 of the first display area DA1 mayadjoin the pixel regions PU2 and transmission regions TA of the seconddisplay area DA2 such that there is little to no space therebetween.

In a first display area DA1, the pixel regions PU1 may be arranged in amatrix form having columns and rows, e.g., in the first direction DR1and in the second direction DR2 which are different from each other, orin two diagonal directions which cross each other. In the second displayarea DA2, the pixel regions PU2 and the light transmissive regions TAmay be arranged in a matrix form, for example, but the present inventionis not limited thereto. Herein, the diagonal direction may indicate adirection intersecting both the first direction DR1 and the seconddirection DR2.

Each of the pixel regions PU1 and PU2 may include a plurality of pixelsor just one pixel. The structure and/or shape of the pixel region PU1and the structure and/or shape of the pixel region PU2 may be the sameas or different from each other. Structures of two neighboring pixelregions PU1 in the first display area DA1 may be the same or different,and structures of two neighboring pixel regions PU2 in the seconddisplay area DA2 may be the same or different. For example, structuresof two pixel regions PU1 neighboring in a row or column direction in thefirst display area DA1 may be symmetrical with respect to each other,and structures of two pixel regions PU2 neighboring in a row or columndirection in the second display area DA2 may be symmetrical with respectto each other.

Hereinafter, a structure of an emissive display device as an example ofa display device according to an exemplary embodiment will be describedwith reference to FIG. 13 and FIG. 14 together with the aforementioneddrawings.

FIG. 13 is a layout view illustrating a display area of a display deviceaccording to an exemplary embodiment of the present disclosure. FIG. 14is a cross-sectional view illustrating the display device taken along aline XIV-XIV′ of FIG. 13.

Referring to FIG. 13, the display device, according to an exemplaryembodiment of the present invention, may include a plurality of pixelcircuit areas PXA in which circuits of pixels corresponding to aplurality of pixels R, G, and B are formed. The pixel circuit areas PXAmay be arranged in a matrix form in the first direction DR1 and thesecond direction DR2. As used here, the phrase “matrix form” may meanthat the constituent elements are arranged in horizontal rows andvertical columns without staggering.

Each of the pixel circuit areas PXA may include a plurality oftransistors T1, T2, T3, T4, T5, T6, and T7 connected to a plurality ofscan lines 151, 152, and 152′, a control line 153, a data line 171, anda driving voltage line 172. The scan lines 151, 152, and 152′ include afirst scan line 151, a second scan line 152, and a third scan line 152′.The third scan line 152′ may be a second scan line 152 of anotherneighboring pixel.

The scan lines 151, 152, and 152′ may transfer scan signals. The secondscan line 152 may transfer a scan signal of a stage previous to thefirst scan line 151, and the third scan line 152′ may transfer a scansignal subsequent to that of the second scan line 152. The control line153 may transfer a control signal, and particularly may transfer a lightemission control signal, capable of controlling light emission of alight emitting diode corresponding to the pixels R, G, and B.

The data line 171 may transfer a data signal Dm, and the driving voltageline 172 may transfer a driving voltage ELVDD. The driving voltage line172 may include a plurality of extensions 178 that protrude in the firstdirection DR1.

A channel of each of the plurality of transistors T1, T2, T3, T4, T5,T6, and T7 may be formed inside an active pattern 130. The activepattern 130 may be curved in various shapes, and may include asemiconductor material such as amorphous/polycrystalline silicon or anoxide semiconductor. For example, the transistor T1 may include achannel region 131 a of the active pattern 130 that is curved at leastonce.

The display device, according to an exemplary embodiment, may include aplurality of pixel electrodes 191 a, 191 b, and 191 c corresponding tothe respective pixel circuit area PXA, and a voltage line 192. Each ofthe pixel electrodes 191 a, 191 b, and 191 c may be disposedcorresponding to each of the pixels R, G, and B. The pixel electrodesmay include a first pixel electrode 191 a, a second pixel electrode 191b, and a third pixel electrode 191 c. The first pixel electrode 191 a ofthe red pixel R may be smaller than the third pixel electrode 191 c ofthe blue pixel B, and the second pixel electrode 191 b of the greenpixel G may be smaller than the first pixel electrode 191 a of the redpixel R.

The voltage line 192 may be curved around edges of the pixel electrodes191 a, 191 b, and 191 c adjacent thereto, and may transfer a constantvoltage such as an initialization voltage that can initialize nodes ofthe pixel circuit areas PXA.

A cross-sectional structure of a display device according to anexemplary embodiment will now be described with reference to FIG. 14together with FIG. 13.

The display device, according to an exemplary embodiment, includes asubstrate 110.

A buffer layer 120, which is an insulating layer, may be disposed on thesubstrate 110, and the active pattern 130 may be disposed thereon. Theactive pattern 130 may include channel regions 131 a, 131 b, and 131 fand conductive regions 131. The conductive regions 131 are disposed onopposite sides of the respective channel regions 131 a, 131 b, and 131f, and may be source and drain regions of the corresponding transistors.

A gate insulating layer 140 may be disposed on the active pattern 130.

A first conductive layer including the scan lines 151, 152 and 152′, thecontrol line 153, and a driving gate electrode 155 a may be disposed onthe gate insulating layer 140.

An interlayer insulating layer 160 may be disposed on the firstconductive layer and the gate insulating layer 140.

At least one of the buffer layer 120, the gate insulating layer 140, andthe interlayer insulating layer 160 may include an inorganic insulatingmaterial such as a silicon nitride, a silicon oxide, or a siliconoxynitride, and/or an organic insulating material.

The interlayer insulating layer 160 and the gate insulating layer 140may include a contact hole 62 disposed on a source region connected tothe channel region 131 b of the transistor T2 in the conductive region131 of the active pattern 130, a contact hole 66 disposed on the drainregion connected to the channel region 131 f of the transistor T6 in theconductive region 131 of the active pattern 130, and the like.

A second conductive layer including the data line 171, the drivingvoltage line 172, and a connector 179 may be disposed on the interlayerinsulating layer 160.

The data line 171 may be connected to a source region connected to thechannel region 131 b of the transistor T2 through the contact hole 62.The extension 178 of the driving voltage line 172 may at least partiallyoverlap the driving gate electrode 155 a with the interlayer insulatinglayer 160 interposed therebetween to form a capacitor Cst. The connector179 may be connected to a drain region connected to the channel region131 f of the transistor T6 through the contact hole 66.

At least one of the first conductive layer and the second conductivelayer is made of a conductive material such as copper (Cu), aluminum(Al), molybdenum (Mo), titanium (Ti), tantalum (Ta), and/or an alloy ofat least two metals thereof.

A passivation layer 180 may be disposed on the second conductive layerand the interlayer insulating layer 160. The passivation layer 180 mayinclude an organic insulating material such as a polyacryl-based resin,a polyimide-based resin, or the like, and an upper surface of thepassivation layer 180 may be substantially flat. The passivation layer180 may include a contact hole 81 disposed on the connector 179.

A third conductive layer including the pixel electrodes 191 a, 191 b,and 191 c and the voltage line 192 may be disposed on the passivationlayer 180. Each of the pixel electrodes 191 a, 191 b, and 191 c may beconnected to the connector 179 through the contact hole 81. The thirdconductive layer may include a transflective conductive material or areflective conductive material.

An insulating layer 350 may be disposed on the third conductive layer.The insulating layer 350 may include an organic insulating material, andmay have an opening 351 disposed above each of the pixel electrodes 191a, 191 b, and 191 c.

An emission layer 370 may be disposed above the pixel electrodes 191 a,191 b, and 191 c. The emission layer 370 may include a portionpositioned within the opening 351 and a portion disposed above theinsulating layer 350. The emission layer 370 may include an organicemission material or an inorganic emission material.

A common electrode 270 may be disposed on both the emission layer 370and the insulating layer 350. The common electrode 270 may also beformed on the insulating layer 350. The common electrode 270 may includea conductive transparent material. For example, the common electrode 270may include silver (Ag).

A common layer such as a hole-injection layer, a hole transport layer,an electron-injection layer, an electron transport layer, or the likemay be disposed between the insulating layer 350 and the commonelectrode 270, between the emission layer 370 and the common electrode270, and/or between the emission layer 370 and the pixel electrodes 191a, 191 b, and 191 c. The common layer may be formed entirely in thefirst display area DA1 and the second display area DA2.

The pixel electrodes 191 a, 191 b, and 191 c form a light emitting diodeED as a light emitting element together with the light emitting layer370 and the common electrode 270. The common electrode 270 may serve asa cathode, and the pixel electrodes 191 a, 191 b, and 191 c may serve asan anode, or vice versa.

The first display area DA1 described above may have the structureillustrated in FIG. 13 and FIG. 14. A planar structure and a sectionalstructure of the pixel region PU2 of the second display area DA2 mayhave a part of the structure illustrated in FIG. 13 and across-sectional stacking structure illustrated in FIG. 14.

In the light transmissive region TA of the second display area DA2, atleast a part of the structure necessary for displaying an image amongthe structures shown in FIG. 13 and FIG. 14 might be omitted. Forexample, in the light transmissive region TA, at least some of theactive pattern 130, the driving gate electrode 155 a, the extension 178of the driving voltage line 172, the pixel electrodes 191 a, 191 b, and191 c, and the emission layer 370 might not be provided. Accordingly,the light transmittance in the light transmissive region TA may behigher than the light transmittance in the pixel regions PU1 and PU2.

Hereinafter, a structure of the light transmissive region TA of thesecond display area DA2 of the display device according to an exemplaryembodiment will be described in detail with reference to FIG. 15.

FIG. 15 illustrates the pixel region PU2 and the light transmissiveregion TA of the second display area DA2. Referring to FIG. 15, thevoltage line 192 at least partially overlaps the first scan line 151 inthe light transmissive region TA of the second display area DA2. Inaddition, the pixel electrodes 191 a, 191 b, and 191 c are not disposedin the light transmissive region TA.

For example, referring to FIG. 13, the voltage line 192 of the pixelregion PU2 is disposed in a zigzag bent shape between the pixelelectrodes 191 a, 191 b, and 191 c. The voltage line 192 at leastpartially overlaps the third transistor T3 so as to prevent thethreshold voltage of the third transistor T3 from being changed due tolight. The voltage line 192 may be formed of a same material as thepixel electrodes 191 a, 191 b, and 191 c.

Referring to FIG. 15, the pixel electrodes 191 a, 191 b, and 191 c areomitted from the light transmissive region TA. This structure mayincrease the light transmittance of the light transmissive region TA.The pixel electrodes 191 a, 191 b, and 191 c are not disposed in thelight transmissive region TA, but the voltage line 192 is not removed sothat the connection with the neighboring pixel region PU2 may bemaintained.

In this case, when the voltage line 192 is disposed to have the zigzagshape in the same manner as in the pixel region PU2 of FIG. 13, light isblocked and the light transmittance is reduced in a region overlappingthe voltage line 192. However, when the voltage line 192 at leastpartially overlaps the first scan line 151 in the light transmissiveregion TA as illustrated in FIG. 15, the light blocking due to thevoltage line 192 may be minimized, and the light transmittance in thelight transmissive region TA may be increased. The first scan line 151is disposed in the region where light is blocked due to the first scanline 151, and thus even when the voltage line 192 is overlappedtherewith, the entire light transmittance is not reduced.

FIG. 15 illustrates a configuration in which the voltage line 192overlaps the first scan line 151, which is merely an example, andalternatively, the voltage line 192 may overlap other scan lines 152 and152′.

Hereinafter, various exemplary embodiments of the present disclosurewill be described focusing on the transmissive region of the seconddisplay area DA2.

FIG. 16 illustrates the second display area DA2 of a display device,according to an exemplary embodiment of the present invention. Referringto FIG. 16, the pixel region PU2 of the second display area DA2 isillustrated as a dotted-line region and a hatched region. The pixeldisposition of the pixel region PU2 may have the structure illustratedin FIG. 13, and a detailed description thereof will be omitted.Alternatively, the pixel disposition of the pixel region PU2 may havethe structure illustrated in FIG. 28 to be described later, and adetailed description thereof will be omitted. The present exemplaryembodiment is characterized by the wire disposition of the transmissiveregion TA of the second pixel region DA2, and will be described based onthe wire disposition of the transmissive region TA.

Referring to FIG. 16, the display device includes an initializationvoltage line 127, a first scan line 151, a second scan line 152, and acontrol line 153. According to an exemplary embodiment of the presentdisclosure, the initialization voltage line 127 may be omitted.

In FIG. 16, the portion not partitioned by the pixel region PU2corresponds to the light transmissive region TA. In FIG. 16 and thefollowing drawings, a portion excluding the region indicated by thepixel region PU2 is the light transmissive region TA.

Referring to FIG. 16, portions of the first scan line 151 and thecontrol line 153 are omitted from the light transmissive region TA. Theomitted first scan line 151 may be connected to the second scan line 152disposed in another column by a scan connection line 170 a. The omittedcontrol line 153 may be connected to the second scan line 153 disposedin another column by a control connection line 170 b.

The first scan line 151 and the second scan line 152 are connected tothe scan connection line 170 a through contact holes 70 a and 70 b. Thecontrol line 153 is connected to the control connection line 170 bthrough contact holes 71 a and 71 b.

As illustrated in FIG. 16, the pixel electrodes 191 a, 191 b, and 191 care not disposed in the light transmissive region TA of the seconddisplay area DA2. However, since the initialization voltage line 127,the scan lines 151 and 152, the control line 153, the data line 171, thedriving voltage line 172, and the like are disposed in the lighttransmissive region TA, the light transmittance is reduced by suchlines.

However, the display device according to the exemplary embodiment ofFIG. 16 increases the transmittance of light in the light transmissiveregion TA by omitting portions of the scan lines 151 and 152 and thecontrol line 153 disposed in the light transmissive region TA of thesecond display area DA2.

Referring to FIG. 16, the first scan line 151 is connected to the secondscan line 152. In a region that is not illustrated in FIG. 16, the firstscan line 151 and the second scan line 152 may be connected to eachother, and the same signal may be supplied thereto. Accordingly, evenwhen the first scan line 151 is connected to the second scan line 152 ofanother adjacent pixel region, the scan signal might not be changed.

FIG. 16 illustrates a configuration in which both the first scan line151 and the control line 153 are connected with the second scan line 152and the control line 153 of another column, but one of the two lines maybe omitted.

FIG. 17 illustrates an exemplary embodiment in which the control line153 is omitted. FIG. 18 illustrates an exemplary embodiment in which thefirst scan line 151 is omitted. Detailed description of the sameconstituent elements is omitted in FIG. 17 and FIG. 18.

In FIG. 16 to FIG. 18, the voltage line 192 at least partially overlapsthe first scan line 151. However, the voltage line 192 may at leastpartially overlap the second scan line 152, and the voltage line 192 mayhave a zigzag shape as illustrated in FIG. 13.

Hereinafter, a display device, according to an exemplary embodiment ofthe present invention, will be described with reference to FIG. 19.Referring to FIG. 19, a portion of the driving voltage line 172 of thelight transmissive region TA is omitted in the display device accordingto an exemplary embodiment. The driving voltage line 172 transfers thedriving voltage ELVDD. The light transmittance of the light transmittingregion TA can be increased by removing the driving voltage line 172 ofthe light transmissive region TA.

Although not illustrated in FIG. 19, the driving voltage lines 172neighboring each other in the first direction DR1 are connected to eachother in the pixel region through a separate connector. Thisconfiguration is illustrated in FIG. 28 and FIG. 29. Therefore, evenwhen a part of the driving voltage line 172 is omitted in the lighttransmissive area TA of the second display area DA2, the driving of thedisplay device is not affected.

FIG. 19 illustrates a configuration in which the driving voltage line172 is omitted from the structure where both the first scan line 151 andthe control line 153 are connected to the second scan line 152 and thecontrol line 153 of another column, but the present invention is notlimited thereto.

FIG. 20, FIG. 21, and FIG. 22 each illustrate a display device accordingto an exemplary embodiment. Referring to FIG. 20, a portion of thecontrol line 153 and a portion of the driving voltage line 172 areomitted from the light transmissive region TA. Alternatively, referringto FIG. 21, a portion of the first scan line 151 and a portion of thedriving voltage line 172 are omitted from the light transmissive regionTA.

Alternatively, referring to FIG. 22, in the light transmissive regionTA, the driving voltage line 172 may be omitted without omitting aportion of the scan lines 151 and 152 and the control line 152.

FIG. 19 to FIG. 22 illustrate a configuration in which two of threedriving voltage lines 172 disposed between the adjacent pixel regionsPU2 are omitted, but this is merely an example, and the presentinvention is not limited thereto. For example, all of the drivingvoltage lines 172 may be omitted, or only one may be omitted.

In the case of the display device in which a portion of the drivingvoltage line 172 of the light transmissive region TA of the seconddisplay area DA2 is omitted as illustrated in FIG. 19 to FIG. 22, adriver 700 and the second display area DA2 may be disposed at oppositeedges of the display device.

FIG. 23 illustrates the driver 700 and the second display area DA2 in adisplay device 1000 d according to what is shown in FIG. 19 to FIG. 22.Referring to FIG. 23, the driver 700 and the second display area DA2 aredisposed at opposite edges of the display device. Accordingly, the firstdisplay area DA1 is disposed between the driver 700 and the seconddisplay area DA2.

Since a voltage transferred from the driver 700 is transferred in thesecond display area DA2 after passing through the first display areaDA1, the display quality of the first display area DA1 might not beaffected even when a part of the driving voltage line 172 is omittedfrom the second display area DA2.

Hereinafter, a display device according to an exemplary embodiment ofthe present invention will be described.

FIG. 24 is a schematic diagram illustrating a display device accordingto an exemplary embodiment of the present invention. Referring to FIG.24, in the display device according to an exemplary embodiment, the dataline 171 and the driving voltage line 172 are disposed together in thelight transmissive region TA. In addition, portions of the scan lines151 and 152 and the initialization voltage line 127 are bent andextended, thereby ensuring a wide empty space in the light transmissiveregion TA.

When FIG. 19 and FIG. 24 are compared, in the case where portions of thedata line 171, the driving voltage line 172, the scan lines 151 and 152,and the initialization voltage line 127 are bent, one empty space isformed in the light transmissive region TA.

When a region where no wire is disposed is wide, an inorganic layer andan organic layer may be omitted in the light transmissive region TA, andthus the light transmittance in the light transmission region TA may beincreased.

FIG. 25 is a cross-sectional view taken along a line XX-XX′ of FIG. 24.A sectional view of FIG. 25 is schematically illustrated based on astacked structure of an inorganic layer and an organic layer. Referringto FIG. 25, a gate insulating layer 140, an interlayer insulating layer160 as an organic layer, and a passivation layer 180 as an organic layermay be disposed on a substrate 110. Each layer may have an opening, anda width of the opening of a layer disposed away from the substrate 110may be wider than that of the opening of a layer disposed close to thesubstrate 110.

FIG. 26 is a cross-section corresponding to that of FIG. 25 according toan exemplary embodiment of the present invention. Referring to FIG. 26,the gate insulating layer 140 is an inorganic layer, the interlayerinsulating layer 160 is an organic layer, and the passivation layer 180is an organic layer. These layers may be sequentially disposed on thesubstrate 100. Each layer may have an opening, and a width of theopening of each layer may become smaller as the distance from thesubstrate 100 increases. Accordingly, as illustrated in FIG. 26, an edgeof the opening of the gate insulating layer 140 may be covered with theinterlayer insulating layer 160, and an edge of the interlayerinsulating layer 160 may be covered with the passivation layer 180.

When a region where no wire is disposed is wide as illustrated in FIG.24, portions of the gate insulating layer 140, which is an inorganiclayer, the interlayer insulating layer 160, which is an organic layer,and the passivation layer 180, which is an organic layer, as shown inFIG. 25 and FIG. 26, may be omitted. When the inorganic layer/theorganic layer/the organic layer are omitted, the light transmittance isincreased within the omitted regions. As illustrated in FIG. 25 and FIG.26, the opening of each layer gradually becomes smaller or larger as thedistance from the substrate increases. This is a required structure forthe etching process. Accordingly, when the region where no wire isdisposed is wide as illustrated in FIG. 24, it is possible to omit theorganic layers and the inorganic layers. When a gap between wires isnarrow as illustrated in FIG. 19, it might not be easy to omit theinorganic layers and the organic layers, or an effect of increasing thelight transmittance might not be great even though the layers areomitted.

Therefore, when portions of the wires are bent and gathered in the lighttransmissive region TA and an empty space where no wire is disposed iswidened, the light transmittance of the light transmissive region TA maybe increased by removing the inorganic layers, the organic layers, andthe like.

FIG. 27 illustrates the second display area DA2 of a display deviceaccording to an exemplary embodiment of the present disclosure.Referring to FIG. 27, the data line 171 and the driving voltage line 172are omitted in the light transmissive region TA of the second displayarea DA2. In addition, portions of the scan lines 151 and 152 and theinitialization voltage line 127 are bent and extended, thereby ensuringa wide empty space in the light transmissive region TA.

Referring to FIG. 27, the data line 171 and the driving voltage line 172are omitted, and thus an area of the empty space where no wire isdisposed is wider than that of FIG. 26. Therefore, the inorganic layersand the organic layers may be widely omitted, and the effect ofincreasing the transmittance may be larger than that of the exemplaryembodiment of FIG. 26.

Referring to FIG. 27, a positional relationship between the driver 700and the second display area DA2 may be the same as that in FIG. 23. Forexample, as illustrated in FIG. 23, the driver 700 and the seconddisplay area DA2 may be disposed at opposite edges of the display device1000 d. In this case, since a voltage transferred from the driver 700 istransferred in the second display area DA2 after passing through thefirst display area DA1, the display quality of the first display areaDA1 might not be affected even when portions of the data line 171 andthe driving voltage line 172 are omitted from the second display areaDA2.

Hereinafter, a display device according to an exemplary embodiment ofthe present invention will be described with reference to the drawings.

FIG. 28 illustrates the second display area DA2 of a display deviceaccording to an exemplary embodiment of the present disclosure. FIG. 29illustrates the pixel region PU2 of FIG. 28 in more detail.

Referring to FIG. 28 and FIG. 29, the display device, according to anexemplary embodiment of the present disclosure, does not include thevoltage line 192. Accordingly, the light transmittance can be increasedbecause the light blocking by the voltage line 192 does not occur in thetransmissive region TA.

In addition, referring to the pixel region PU2 of FIG. 28, since thevoltage line 192 is not disposed in the pixel region PU2, each of thepixel electrodes 191 a, 191 b, and 191 c is freely disposed. Therefore,the pixel electrodes 191 a, 191 b, and 191 c are disposed inside thepixel region PU2, and the light transmittance of the transmissive regionTA may be increased by not penetrating the transmissive region TA. Inthis case, the respective pixel electrodes 191 a, 191 b, and 191 c mayat least partially overlap the third transistor T3 as illustrated inFIG. 29.

In the present specification, the pixel region PU2 and the transmissiveregion TA are defined by using a wire constituting one pixel unit as aboundary.

For example, when one pixel includes seven transistors, the boundary ofone pixel region may be defined as an area occupied by the seventransistors.

The voltage line 192 at least partially overlaps the third transistor T3so as to serve as a light-blocking layer of the third transistor T3.However, in the display device according to an exemplary embodiment, thevoltage line 192 is omitted, and each of the pixel electrodes 191 a, 191b, and 191 c at least partially overlaps the third transistor T3.Accordingly, the light incident on the third transistor T3 is cut off bythe pixel electrodes 191 a, 191 b, and 191 c, and thus the thresholdvoltage of the third transistor T3 can be prevented from being changedeven without the voltage line 192.

Referring to FIG. 28, the pixel electrodes 191 a, 191 b, and 191 c arefreely arranged in the pixel region PU2 because the voltage line 192 isnot located in the pixel region PU2. Therefore, each of the pixelelectrodes 191 a, 191 b, and 191 c may at least partially overlap theactive pattern 130 of the pixel region PU2, the scan lines 151 and 152,and the control line 153, and the overlapping with the active pattern130 may be minimized. A region where the scan lines 151 and 152, thecontrol line 153, and the like are disposed in the pixel region PU2 is aregion where the light transmittance is reduced by wires. Accordingly,when the pixel electrodes 191 a, 191 b, and 191 at least partiallyoverlap the scan lines 151 and 152 and the control line 153, they aredisposed in the region where light is already blocked, and thusadditional light blocking by the pixel electrodes 191 a, 191 b, and 191c does not occur. Therefore, the light transmittance may be increased inthe second display area DA2.

However, when the voltage line 192 is disposed within the pixel regionPU2, each of the pixel electrodes 191 a, 191 b, and 191 c at leastpartially overlaps the scan line etc. disposed in the transmissiveregion TA due to a space occupied by the voltage line 192, and in thiscase, the light transmittance of the transmissive region TA may bereduced by the pixel electrodes 191 a, 191 b, and 191 c. However, in thedisplay device according to an exemplary embodiment, the voltage line192 is omitted so that the pixel electrodes 191 a, 191 b, and 191 c atleast partially overlap the wires in the pixel regions PU2 and do notpenetrate the transmissive region TA, and thus the light transmittanceof the transmissive area TA is not reduced.

Referring to FIG. 28, the first scan line 151 and the control line 153in the transmissive region TA may be bent to be disposed close to thesecond scan line 152 and the initialization voltage line 127, adjacentthereto. Thus, an area of an empty space where no wire is disposed inthe transmissive region TA is widened. Therefore, as illustrated in FIG.24 to FIG. 26, the organic layer, the inorganic layer, and the like inthe transmissive region TA may be omitted to further increase thetransmittance.

Hereinafter, the pixel disposition of the pixel region PU2 of thedisplay device according to an exemplary embodiment will be described indetail with reference to the drawings. FIG. 29 illustrates the pixeldisposition of the pixel region PU2 of the FIG. 28 in detail.

Referring to FIG. 29, the emissive display device, according to anexemplary embodiment of the present disclosure, includes a scan line 151extending along a first direction DR1 to transfer a scan signal Sn, asecond scan line 152 for transferring the previous-stage scan signalS(n−1), a control line 153 for transferring the light emission controlsignal EM, and an initialization voltage line 127 for transferring theinitialization voltage Vint. A bypass signal GB is transferred throughthe second scan line 152.

The emissive display includes the data line 171 that extends in a seconddirection DR2 that is orthogonal to the first direction DR1 to transferthe data voltage Dm and the driving voltage line 172 for transferringthe driving voltage ELVDD.

The emissive display includes a driving transistor T1, a secondtransistor T2, a third transistor T3, a fourth transistor T4, a fifthtransistor T5, a sixth transistor T6, a seventh transistor T7, and astorage capacitor Cst and a light-emitting diode LED.

Each channel of the driving transistor T1, the second transistor T2, thethird transistor T3, the fourth transistor T4, the fifth transistor T5,the sixth transistor T6, and the seventh transistor T7 is disposed inthe active pattern 130 which extends longitudinally. In addition, atleast portions of the first and second electrodes of the transistors T1,T2, T3, T4, T5, T6, and T7 are disposed in the active pattern 130. Theactive pattern 130 (which is shaded in FIG. 29) may be bent in variousshapes. The active pattern 130 may include an oxide semiconductor or apolycrystalline semiconductor made of polysilicon.

The active pattern 130 includes a channel doped with an N-type impurityor a P-type impurity, and a first doped region and a second doped regiondisposed at opposite sides of the channel and having a higher dopingconcentration than an impurity doped in the channel. The first dopedregion and the second doped region correspond to the first electrode andthe second electrode of the plurality of transistors T1, T2, T3, T4, T5,T6, and T7, respectively. When one of the first doped region and thesecond doped region is a source region, the other doped region is adrain region. In addition, regions between the first electrodes and thesecond electrodes of different transistors may be doped in the activepattern 130 such that the transistors may be electrically connected toeach other.

Each channel of the transistors T1, T2, T3, T4, T5, T6, and T7 at leastpartially overlaps a gate electrode of each of the transistors T1, T2,T3, T4, 15, T6, and T7, and is disposed between the first electrode andthe second electrode of each of the transistors T1, T2, T3, T4, T5, T6,and T7. The transistors T1, T2, T3, T4, T5, T6, and T7 may havesubstantially the same stacked structure. Hereinafter, the drivingtransistor T1 will be described in detail, and the remaining transistorsT2, T3, T4, T5, T6, and T7 will be briefly described.

The driving transistor T1 includes a channel, a first gate electrode155, a first electrode S1, and a second electrode D1. The channel of thedriving transistor T1 is disposed between the first electrode S1 and thesecond electrode D1 to at least partially overlap the first gateelectrode 155 in a plan view. The channel is curved in order to form alonger channel length within a limited region. As the length of thechannel becomes longer, a driving range of the gate voltage Vg appliedto the first gate electrode 155 of the driving transistor T1 is widenedand a driving current Id is constantly increased depending on the gatevoltage Vg. As a result, it is possible to control a gray level of lightemitted from the light-emitting diode LED more finely and to increasedisplay quality of the light emitting diode display by adjusting amagnitude of the gate voltage Vg. In addition, since the channel extendsin various directions rather than extending in one direction, the effectof the orientation is offset in the manufacturing process, therebyreducing a process scattering influence. Accordingly, it is possible toprevent image quality deterioration such as a stain defect that mayoccur by a characteristic variation of the driving transistor T1depending on regions of the display device due to process scattering(e.g., a luminance difference occurring depending on the pixel even whena same data voltage Dm is applied). A shape of such channels may bevariously modified without being limited to the illustrated Ω form.

The first gate electrode 155 at least partially overlaps the channel ina plan view. The first electrode S1 and the second electrode D1 aredisposed at opposite sides of the channel, respectively. An insulatedextension of the storage line 126 is disposed on the first gateelectrode 155. The extension of the storage line 126 at least partiallyoverlaps the gate electrode 155, with a second gate insulating layerinterposed therebetween in a plan view to constitute a storage capacitorCst. The extension of the storage line 126 is the first storageelectrode of the storage capacitor Cst, and the first gate electrode 155constitutes the second storage electrode. The extension of the storageline 126 has an opening 56 such that the first gate electrode 155 may beconnected to a first data connector 71. In the opening 56, an uppersurface of the first gate electrode 155 and the first data connector 71are electrically connected to each other through a contact hole 61. Thefirst data connector 71 is connected to the second electrode D3 of thethird transistor T3 to connect the gate electrode 155 of the drivingtransistor T1 to the second electrode D3 of the third transistor T3.

A gate electrode of the second transistor T2 may be a portion of thescan line 151. The data line 171 is connected to a first electrode S2 ofthe second transistor T2 through a contact hole 62. The first electrodeS2 and the second electrode D2 may be disposed on the active pattern130.

The third transistor T3 may be formed to include two transistorsadjacent to each other. A mark T3 is illustrated at a left side and alower side with reference to a portion where the active pattern 130 isfolded in the pixel PX of FIG. 29. These two parts each serve as thethird transistor T3. A first electrode S3 of a first third transistor T3is connected to a second electrode D3 of a second third transistor T3. Agate electrode of the two transistors T3 may be a portion of the scanline 151 or a portion that protrudes upward from the scan line 151. Sucha structure may be referred to as a dual-gate structure, and may preventa leakage current from flowing. The first electrode S3 of the thirdtransistor T3 is connected to a first electrode S6 of the sixthtransistor T6 and the second electrode D1 of the driving transistor T1.The second electrode D3 of the third transistor T3 is connected to thefirst data connector 71 through a contact hole 63.

The fourth transistor T4 is also formed to include two fourthtransistors T4, and the two fourth transistors T4 are formed at aportion where the second scan line 152 and the active pattern 130 meeteach other. A gate electrode of the second transistor T2 may be aportion of the second scan line 152. A first electrode S4 of a firstfourth transistor T4 is connected to a second electrode D4 of a secondfourth transistor T4. Such a structure may be referred to as a dual-gatestructure, and may prevent a leakage current from flowing. A second dataconnector 72 is connected to the first electrode S4 of the fourthtransistor T4 through a contact hole 65, and a first the data connector71 is connected to the second electrode D4 of the fourth transistor T4through the contact hole 63.

As such, a dual-gate structure may be used by using the third transistorT3 and the fourth transistor T4 to effectively prevent occurrence of aleakage current by blocking an electron movement path of the channel inan off state.

A gate electrode of the fifth transistor T5 may be a portion of thecontrol line 153. The driving voltage line 172 is connected to a firstelectrode S5 of the fifth transistor T5 through a contact hole 67, and asecond electrode D5 is connected to the first electrode S1 of thedriving transistor T1 through the active pattern 130.

A gate electrode of the sixth transistor T6 may be a portion of thecontrol line 153. A third data connector 73 is connected to a secondelectrode D6 of the sixth transistor T6 through a contact hole 69, and afirst electrode S6 is connected to the second electrode D1 of thedriving transistor through the active pattern 130.

A gate electrode of the seventh transistor T7 may be a portion of thesecond scan line 152. A first electrode S7 of the seventh transistor T7is connected to the second electrode D6 of the sixth transistor T6, anda second electrode D7 is connected to the first electrode S4 of thefourth transistor T4.

The second data connector 72 is connected to the initialization voltageline 127 through a contact hole 64. A pixel electrode may be connectedto a third data connector 73 through a contact hole 81.

A parasitic capacitor control pattern 79 may be disposed between thedual gate electrodes of the compensation transistor T3. A parasiticcapacitor exists in the pixel, and an image quality characteristicthereof may vary when a voltage applied to the parasitic capacitorchanges. The driving voltage line 172 is connected to the parasiticcapacitor control pattern 79 through a contact hole 66. As a result, theimage quality characteristic may be prevented from being varied byapplying the driving voltage ELVDD having a constant DC voltage to theparasitic capacitor. The parasitic capacitor control pattern 79 may bedisposed in a different region than the illustrated position, and avoltage other than the driving voltage ELVDD may be applied thereto.

A first end of the first data connector 71 is connected to the gateelectrode 155 through the contact hole 61, and a second end thereof isconnected to the second electrode D3 of the third transistor T3 and thesecond electrode D4 of the fourth transistor T4 through the contact hole63.

A first end of the second data connector 72 is connected to the firstelectrode S4 of the fourth transistor T4 through the contact hole 65,and a second end thereof is connected to the initialization voltage line127 through the contact hole 64.

The third data connector 73 is connected to the second electrode of thesixth transistor T6 though the contact hole 69.

Each of the pixel electrodes 191 a, 191 b, and 191 c may be connected tothe third data connector 73 through contact holes 81.

The pixel electrodes may include a first pixel electrode 191 a, a secondpixel electrode 191 b, and a third pixel electrode 191 c.

The first pixel electrode 191 a may at least partially overlap the firsttransistor T1 and the third transistor. The first pixel electrode 191 ahas a widest width in the first direction DR1 between the first scanline 151 and the second scan line 152.

The second pixel electrode 191 b may at least partially overlap thethird transistor T3 and the fourth transistor T4. The second pixelelectrode 191 b has a widest width in the first direction DR1 in aregion overlapping the second scan line 152.

The third pixel electrode 191 c may at least partially overlap the firsttransistor T1 and the third transistor. The first pixel electrode 191 ahas a widest width in the first direction DR1 between the first scanline 151 and the second scan line 152.

The planar shapes of the first pixel electrode 191 a and the third pixelelectrode 191 c may be similar. However, an area of the third pixelelectrode 191 c may be larger than that of the first pixel electrode 191a.

Referring again to FIG. 28, each of the pixel electrodes 191 a, 191 b,and 191 c may at least partially overlap color filters 230R, 230G, and230B. The first pixel electrode 191 a may at least partially overlap thefirst color filter 230R representing red, and the second pixel electrode191 b may at least partially overlap the second color filter 230Grepresenting green, and the third pixel electrode 191 c may at leastpartially overlap the third color filter 230B representing blue.

As described above, the display device, according to exemplaryembodiments of the present invention, has different pixel densities inthe first display area DA1 and the second display area DA2. The seconddisplay area DA2 may include the pixel region PU2 and the transmissiveregion TA, and may change the disposition of the voltage line 192 in thetransmissive region TA or omit portions of the scan lines 151 and 152,omit portions of the data line 171 and the driving voltage line 172, orchange the disposition of the wires, so as to increase the lighttransmittance of the transmissive region TA. In addition, the lighttransmittance of the transmissive region TA may be increased by removingthe voltage line 192 from the pixel region PU2 of the second displayarea DA2 and disposing the pixel electrodes 191 a, 191 b, and 191 cwithin the pixel region PU2.

While exemplary embodiments of the present invention have been describedin connection with the illustrative drawings, it is to be understoodthat the invention is not limited to the disclosed embodiments, but, onthe contrary, is intended to cover various modifications and equivalentarrangements included within the spirit and scope of the specification.

What is claimed is:
 1. A display device, comprising: a first displayarea including a plurality of first pixel regions; and a second displayarea including both a plurality of second pixel regions and a pluralityof light transmissive regions, wherein the second display area furtherincludes a plurality of scan lines, wherein the second pixel regionincludes a plurality of pixel electrodes and a voltage line disposed ona same layer as the plurality of pixel electrodes, and wherein thevoltage line at least partially overlaps the plurality of scan lines soas to be parallel therewith in the light transmissive region.
 2. Thedisplay device of claim 1, wherein the plurality of pixel electrodes isabsent from the light transmissive region.
 3. The display device ofclaim 1, wherein: the second display area further includes a controlline, and portions of the plurality of scan lines and the control lineare absent from the light transmission region.
 4. The display device ofclaim 3, wherein: the plurality of scan lines include a first scan lineand a second scan line, and a portion of the first scan line isconnected to the second scan line of an adjacent pixel column.
 5. Thedisplay device of claim 3, wherein a portion of the control line isconnected to a control line of an adjacent pixel column.
 6. The displaydevice of claim 1, wherein: the second display area includes a pluralityof data lines and a plurality of driving voltage lines, and one or moreof the plurality of driving voltage lines are absent from the lighttransmissive region.
 7. The display device of claim 6, wherein one ormore of the plurality of data lines are absent from the lighttransmissive region.
 8. The display device of claim 6, furthercomprising: a driver, wherein the first display area is disposed betweenthe driver and the second display area.
 9. The display device of claim1, wherein: the second display area includes a plurality of wires, theplurality of wires include a plurality of scan lines and control linesextending primarily in a first direction and a plurality of data linesand driving voltage line extending primarily in a second direction, andportions of the plurality of wires are bent so as to be closer to eachother in the light transmissive region than if the wires were straight.10. The display device of claim 9, wherein an interval between some ofthe plurality of wires in the light transmissive region is smaller thanan interval between the wires of the plurality of wires in the secondpixel region.
 11. The display device of claim 9, wherein a portion ofthe light transmissive region where none of the plurality of wires aredisposed has an opening that is formed by partially removing inorganiclayers and organic layers.
 12. A display device comprising: a firstdisplay area including a plurality of first pixel regions; and a seconddisplay area including both a plurality of second pixel regions and aplurality of light transmissive regions, wherein the second display areaincludes a plurality of wires, wherein the plurality of wires includes aplurality of scan lines extending primarily in a first direction, aplurality control lines extending primarily in the first direction, aplurality of data lines extending primarily in a second direction, and aplurality of driving voltage line extending primarily in the seconddirection, and wherein at least one of the plurality of wires is absentfrom the light transmissive region.
 13. The display device of claim 12,wherein portions of the plurality of wires are bent to be closer to eachother in the light transmissive region than if they were straight. 14.The display device of claim 13, wherein an interval between some of theplurality of wires in the light transmissive region is smaller than aninterval between the wires of the plurality of wires in the second pixelregion.
 15. The display device of claim 14, wherein a portion of thelight transmissive region where no wires of the plurality of wires aredisposed has an opening that is formed by partially removing inorganiclayers and organic layers.
 16. The display device of claim 12, wherein:the second pixel region includes a plurality of pixels electrodes, thesecond pixel region does not include a voltage line disposed on a samelayer as the plurality of pixel electrodes, and none of the plurality ofpixel electrodes overlap the light transmissive region.
 17. The displaydevice of claim 12, further comprising a driver, wherein the firstdisplay area is disposed between the driver and the second display area.18. A display device, comprising: a first display area including aplurality of first pixel regions; and a second display area including aplurality of second pixel regions and a plurality of light transmissiveregions, wherein the second display area includes a plurality of wires,wherein the plurality of wires includes a plurality of scan linesextending primarily in a first direction, a plurality of control linesextending primarily in the first direction, a plurality of data linesextending primarily in a second direction, and driving voltage lineextending primarily in the second direction, wherein portions of theplurality of wires are bent in the light transmissive region, andwherein an interval between some wires of the plurality of wires in thelight transmissive region is smaller than an interval between wires ofthe plurality of wires in the second pixel region.
 19. The displaydevice of claim 18, wherein a portion of the light transmissive regionwhere no wires of the plurality of wires are disposed has an openingthat is formed by partially removing inorganic layers and organiclayers.
 20. The display device of claim 18, wherein: the second pixelregion includes a plurality of pixel electrodes, the second pixel regiondoes not include a voltage line disposed on a same layer as theplurality of pixel electrodes, and the plurality of pixel electrodes donot overlap the light transmissive region.
 21. The display device ofclaim 18, wherein the plurality of pixel electrodes is not disposed inthe light transmissive region.
 22. A display device comprising: a firstdisplay area including a plurality of first pixel regions; and a seconddisplay area including both a plurality of second pixel regions and aplurality of light transmissive regions, wherein no pixel electrodes ofa plurality of pixel electrodes is disposed in the light transmissiveregion, and wherein the second pixel region includes a plurality oftransistors and the plurality of pixel electrodes, wherein thetransistors includes: a switching transistor, a driving transistor, anda third transistor including a first electrode connected to an outputelectrode of the driving transistor and a second electrode connected toa gate electrode of the driving transistor, and wherein each of theplurality of pixel electrodes at least partially overlaps the lighttransmissive region.
 23. The display device of claim 22, wherein none ofthe plurality of pixel electrodes overlap the light transmissive region.24. The display device of claim 22, wherein the display device does notinclude a voltage line disposed on a same layer as the plurality ofpixel electrodes.
 25. The display device of claim 22, wherein: each of aplurality of pixels of the display device includes a first pixelelectrode of the plurality of pixel electrodes, a second pixel electrodeof the plurality of pixel electrodes, and a third pixel electrode of theplurality of pixel electrodes, the second pixel region includes a firstscan line, a second scan line, and a control line, which are disposedside by side in a first direction, the first pixel electrode and thethird pixel electrode have a planar shape having a maximum width in thefirst direction between the first scan line and the control line, andthe second pixel electrode has a planar shape having a maximum width inthe first direction in a region overlapping the second scan line.